The tractrix spiral is a spiral with parametric equations
 |  |  |
(1)
|
 |  |  |
(2)
|
for 
.
It is also known as the polar tractrix or complicated tractrix and was studied by Huygens and Varignon in 1704 and Cotes in 1722 (Ferréol).
Tractrix Spiral
See also
Spiral, TractrixExplore with Wolfram|Alpha
References
Ferréol, R. "Tractrix Spiral." https://mathcurve.com/courbes2d.gb/spiraletractrice/spiraletractrice.shtml.Cite this as:
Weisstein, Eric W. "Tractrix Spiral." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/TractrixSpiral.html